Question about Williams (5009622) Ceramic Gas Wall Mounted Panel Heater

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I accidentally turned the thermostat all the way up, meaning to turn it off. The heater must have a safety feature where it stopped working, but now it won't turn on, and the red ignition button doesn't do anything. I want to turn the heater back on, but don't know how.

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Check if heater has a reset button

Posted on Apr 11, 2011

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1 Answer

When I turn the gas on the knobs won't stay down, why?


The knobs do not stay down by design. It is a safety feature to prevent accidental turning. You must press the knob down to turn it from position to position.

Nov 30, 2014 | Heating & Cooling

1 Answer

Stopped working, no smell or anything just stopped working, replaced fuse, what is problem?


First, make sure heater is plugged into a working outlet on at least a 15-amp circuit. To test the outlet, plug a known-working lamp into it and see if you can turn it on.

Then, turn on both switches and turn up themostat (clockwise, as i recall) until you hear a faint click. If it starts working, then you just didn't have it set high enough. If it doesn't work, problem could be bad switches, bad thermostat, bad power cord and/or plug, and/or bad heating element.

Troubleshooting down to the individual component requires use of voltmeter or ohmmeter, and MUST BE DONE WITH THE UNIT UNPLUGGED!!!!!!!!!!!!!!!!!!!!!!!!!!!!
First, FOLLOW ALL SAFETY RULES AND SAFETY PRECAUTIONS AND COMMON SENSE when working on this unit. If you are in doubt or don't know what these rules and safety precautions are, DO NOT OPEN OR ATTEMPT TO REPAIR THIS UNIT!!!!!!!!!!!!!!!!!

To test each of the above components safely, first UNPLUG THE UNIT FROM THE OUTLET. Then, WITH THE HEATER UNPLUGGED, open up the heater and, with a DVM or other ohmmeter, measure the resistance across each switch, across the thermostat (with contacts closed), and across the heating element. Ohmmeter should read as 0 ohms across switch & thermostat contacts. Resistance of heating element should read less than about 25 ohms. Resistance of each conductor of power cord should read less than about 1 ohm. Replace defective parts ONLY with replacement parts purchased from the manufacturer, and install them and re-assemble the unit per manufacturer's original design and instructions. When finished, verify that there are no short circuits from the power cord to the heater frame, by unplugging the unit, turning on all switches and turning up the thermostat to maximum, and measuring the resistance from both prongs of the power cord touched together to one probe of the ohmmeter, to the frame of the heater. Set the ohmmeter on its highest-resistance range. You should not measure ANY continuity at all, which means resistance should measure infinity. If you measure anything less than infinity, do not use the heater. If you do not understand ALL OF the forgoing instructions or cannot carry out all of them, DO NOT ATTEMPT REPAIR OF THE HEATER!!! Again, SAFETY FIRST!!!! DON"T TAKE CHANCES! THIS UNIT CARRIES LETHAL VOLTAGES INSIDE. IF YOU'RE NOT ABSOLUTELY SURE YOU KNOW WHAT YOU'RE DOING, DON'T OPEN OR ATTEMPT TO REPAIR THIS UNIT!!!!!! Stay Safe!!!! Stay alive!!!!

And, make sure you unplug this unit when not in use or away from home!
Good luck, and STAY SAFE!!!!

Sep 20, 2013 | DeLonghi 6707E Oil Filled Radiator Heater

1 Answer

The difference between thermal fuse and thermostat


Thermal fuse is a heat-sensitive safety feature that shuts down system when overheating is detected.
In electrical wiring, the thermal fuse reacts to high temperature caused by too many amps on the electric circuit. When temperature exceeds the fuse amp rating, then the fuse trips and cuts power to electric circuit.
Example of thermal fuse is a household circuit breaker.
Gas water heaters have a different type of thermal fuse located in the combustion chamber or on the combustion chamber door, and also inside a copper probe inside water tank. Water heater thermal fuses will trip when water temperature exceeds fuse rating, or when heat inside the combustion chamber exceeds temperature rating of fuse. This action will cut off gas supply to water heater.
So a thermal fuse is a safety feature.

Thermostat is not a safety feature.
Thermostat is a measuring tool.
Thermostats measure temperature.
Example of thermostat is outdoor thermometer, or cooking thermometer, or Heat-AC control located on wall inside house.
Thermostats can give a simple temperature reading, or they can cause a separate control to turn on-off depending on application.
For example thermostat on Heat-AC will read room temperature, and when temperature exceeds setting, this triggers a switch that turns Heat-AC on-off.

Many appliances have both thermal safety fuse and thermostat.
Take for example a gas water heater. A copper tube extends into the water tank. Inside the copper tube are 2 things: A thermostat probe to measure water temperature, and a thermal fuse called an ECO for energy cut off. The ECO is a thermal fuse, and is a safety feature.
http://waterheatertimer.org/images/Gas-valve-ECO2-358.jpg
The thermostat reads temperature of water, and turns water heater on-off to keep water hot. A person can adjust water temperature by adjusting the thermostat dial on front of water heater.
However if the thermostat fails, or some other problem occurs, and water inside the tank gets hotter than 180 degrees, then the ECO or thermal fuse will trip. When the thermal fuse trips, this turns off gas to the water heater so water cannot get any hotter. The safety device prevents water heater explosion. The water heater must be repaired since this particular thermal fuse cannot be re-used afterwards, and must be replaced.

Oct 11, 2012 | Dryers

1 Answer

Difference between thermostat and thermal fuse


Hello Mary
Thermal fuse is a heat-sensitive safety feature that shuts down system when overheating is detected.
In electrical wiring, the thermal fuse reacts to high temperature caused by too many amps on the electric circuit. When temperature exceeds the fuse amp rating, then the fuse trips and cuts power to electric circuit.
Example of thermal fuse is a household circuit breaker.
Gas water heaters have a different type of thermal fuse located in the combustion chamber or on the combustion chamber door, and also inside a copper probe inside water tank. Water heater thermal fuses will trip when water temperature exceeds fuse rating, or when heat inside the combustion chamber exceeds temperature rating of fuse. This action will cut off gas supply to water heater.
So a thermal fuse is a safety feature.

Thermostat is not a safety feature.
Thermostat is a measuring tool.
Thermostats measure temperature.
Example of thermostat is outdoor thermometer, or cooking thermometer, or Heat-AC control located on wall inside house.
Thermostats can give a simple temperature reading, or they can cause a separate control to turn on-off depending on application.
For example thermostat on Heat-AC will read room temperature, and when temperature exceeds setting, this triggers a switch that turns Heat-AC on-off.

Many appliances have both thermal safety fuse and thermostat.
Take for example a gas water heater. A copper tube extends into the water tank. Inside the copper tube are 2 things: A thermostat probe to measure water temperature, and a thermal fuse called an ECO for energy cut off. The ECO is a thermal fuse, and is a safety feature.
http://waterheatertimer.org/images/Gas-valve-ECO2-358.jpg
The thermostat reads temperature of water, and turns water heater on-off to keep water hot. A person can adjust water temperature by adjusting the thermostat dial on front of water heater.
However if the thermostat fails, or some other problem occurs, and water inside the tank gets hotter than 180 degrees, then the ECO or thermal fuse will trip. When the thermal fuse trips, this turns off gas to the water heater so water cannot get any hotter. The safety device prevents water heater explosion. The water heater must be repaired since this particular thermal fuse cannot be re-used afterwards, and must be replaced.

Oct 11, 2012 | Dryers

2 Answers

Rheem 83xr52-2 50 gal residential water heater. Water temp was low. I cut power at electric panel, removed upper panel on water heater, turned up thermostat, replaced panel and switched power back on at...


You can open the top up again. I would not turn the temp higher than 130 degrees, maximum. However, there should be above the thermostat a red button. This is where the power wires connect to the thermostats and heating elements. Sometimes this button needs to be reset, press it and discern if you hear a click sound. This means that the high temperature safety switch has tripped open and you had to manually "reset" it. There are two thermostats by the way. The water heater usually works this way. There are two thermostats and two heaters. The upper tank heater turns on first and it heats the top half of the tank. Then when the thermostat above is satisfied it then allows the bottom heater to come on and heat the bottom half of the tank. You might want to set the bottom heater thermostat as well. This is made this way because it is actually faster and more efficient to heat the top half first and the bottom half secondly. Try this first with the reset button. We could check voltages, but that requires a level of knowledge and safety that I am not sure that you are comfortable with. Pictures of the upper and lower thermostats and connections will help if the "reset" does not do the trick. By the way, not meaning or implying anything, but did you move the thermostat in the right direction? Sometimes the dials can be confusing.

Nov 28, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

This Morning I turned on my heater (to auto) after changing my air filters and it went on and when it clicked off and i tried to turn it back on it stopped working, the thermostat works and i changed the...


Make sure the panels are put back on securly, the door safety switch may not be depressed. Also check the circuit board in the heating system for a blown fuse.

Nov 23, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Hi, we have a Honeywell ducted heating thermostat model t8602c2069. It has recently stopped working. This display panel is working so it's not the batteries, however when we turn it on heat does not come...


We have exactly the same problem as dmlauder! (posted 6th September)
What does the square symbol mean?? We have to keep resetting the outdoor heating unit...it works for a few minutes then stops
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1 Answer

Where can i locate the on/off machinism for the presto heat dish?


Handy top-mounted thermostatic control maintains the desired temperature automatically plus it has a special safeguard features turn the heater off automatically in case of accidental tip-over. Because of this technology they eliminated an on/off switch. You have to unplug it if you want it to be totally off. sorry

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1 Answer

Problem with used honeywell surround HZZ 2200. run for a minute then shut off.


the way i got mine to run is by pulling off the thermostat knob and then grab the pin and turn it the same way as to turn it up it will loosen it seems it has a mechanical thermostat and its pressure based so adjust it as needed and you can even put the knob back on ... gl
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1 Answer

I have a reclaimer90 gas forced air furnace,the fan runs non stop


sounds like the High Limit has opened due to over heating. if your filters are dirty it may cause the unit to over heat and the High Limit saftey will turn off the gas and just run the fan till it cools and the safety should close. however the safety could have failed and stuck open , in that case the burner wont come on and the fan wont shut off. look for a flash code on the control board and thier should be a sticker somewhere that tells you what the # of blinks means.

Sep 19, 2009 | Honeywell Electronic Programmable...

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